// Specification Resources
Documents & References
All specification documents, reference implementations, conference presentations and community resources for the SMB3 POSIX Extensions.
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Rendered Specification (HTML/PDF)
2 docsSpecification Sources
1 docsConference Presentations
5 docsPDFCONFPDFCONFPDF
SMB3.1.1 POSIX/Linux Extensions — SambaXP 2023
Steven French. Status update, what works today, implementation notes across Linux client, Samba and ksmbd. Includes Wireshark tracing guidance.
Opening up Linux to the Wider World — USENIX Vault 2020
French & Allison. Progress in the Linux kernel client and Samba server. Third-party implementations and what remains to be done.
SMB3 POSIX Protocol Extensions — Vault 2020 Slides
Slide deck for the Vault 2020 session. Implementation status summary, Linux syscall comparison and current gaps.
SMB3 Linux/POSIX Protocol Extensions — USENIX Vault 2019
French & Allison. First major overview: case sensitivity, locking, delete semantics and mode bits. Samba & Linux kernel test implementations.
SMB3.1.1 POSIX Protocol Extensions — SNIA SDC 2018
Original SNIA Storage Developer Conference introduction. Problem statement, goals, and first experimental implementation notes for Linux 4.18.
Wiki Resources
2 docsWIKIWIKI
SMB3-Linux — SambaWiki
Comprehensive technical wiki covering mount options, create context details, character mapping, lock semantics, fallocate and ACL mapping.
UNIX Extensions (Legacy CIFS) — SambaWiki
Historical CIFS POSIX extensions for context. CIFS is deprecated; SMB3.1.1 extensions are the current successor path.
Related Standards
2 docsSPECSPEC
POSIX.1-2017 (IEEE Std 1003.1)
The Open Group Base Specifications Issue 7. Defines the POSIX API that SMB3 POSIX Extensions aim to transparently support over the network.
MS-SMB2 — Microsoft SMB2/SMB3 Protocol
The Microsoft Open Specification for the SMB2/SMB3 protocol family. The POSIX Extensions build on top of this base protocol.